GitHub Announce Git-Backed Wiki System

GitHub have announced a “completely rewritten” Git-backed
wiki system, where each page is a file in a directory and each
change is a commit.

This new GitHub Wikis will leverage the GitHub markup library,
and provide context sensitive help and a toolbar. Users will also
be able to display images hosted inside the Git repository. The
tools for showing the history and making comparisons remains
unchanged.

GitHub are also releasing Gollum, the
Ruby library that powers GitHub Wikis.